modem/msm-modem: rename msm-modem-mainline to msm-modem-rpmsg (MR 1356)

Newer Qualcomm SoCs (e.g. SDM845. MSM8953) seem to use a different
method to talk to the modem. There are no longer separate rpmsg/SMD
channels for QMI messags, instead the modem is also available through QRTR.

On these newer SoCs, installing msm-modem-mainline is pointless,
because the created /dev/modem device will not actually allow
communicating with the modem. However, you still need the part from
the base package (msm-modem), which installs+enables rmtfs.

To avoid confusion, rename the msm-modem-mainline subpackage to
msm-modem-rpmsg. Install only "msm-modem" on SDM845 because that
likely does not allow communication with the modem through RPMSG
anyway.

device/community/soc-qcom-msm8916/APKBUILD

@@ -2,7 +2,7 @@
 pkgname=soc-qcom-msm8916
 pkgdesc="Common package for Qualcomm MSM8916 devices"
 pkgver=7
-pkgrel=1
+pkgrel=2
 url="https://postmarketos.org"
 license="BSD-3-Clause"
 arch="aarch64 armv7"
@@ -23,7 +23,7 @@ package() {
 }
 
 modem() {
-	depends="msm-modem-mainline q6voiced"
+	depends="msm-modem-rpmsg q6voiced"
 	install="$subpkgname.post-install"
 
 	install -Dm644 q6voiced.conf "$subpkgdir"/etc/conf.d/q6voiced